EP 1683328 A4 20080123 - TWO-WAY COMMUNICATIONS DEVICE HAVING A SINGLE TRANSDUCER
Title (en)
TWO-WAY COMMUNICATIONS DEVICE HAVING A SINGLE TRANSDUCER
Title (de)
BIDIREKTIONALE KOMMUNIKATIONSEINRICHTUNG MIT EINEM EINZIGEN WANDLER
Title (fr)
DISPOSITIF DE COMMUNICATION BILATERALE EQUIPE D'UN SEUL TRANSDUCTEUR
Publication
Application
Priority
- US 2004037409 W 20041110
- US 51919503 P 20031111
Abstract (en)
[origin: WO2005048572A2] Embodiments of the invention provide a small and economical two-way communications device that has both an excellent echo-cancellation function that substantially suppresses echoes over the entire frequency range and an excellent voice-operated exchange function that provides natural switching of conversation sounds while protecting against unnatural disconnection or echoes during conversation, even when a reception signal and a transmission signal are superimposed in a single transducer.
IPC 8 full level
H04B 1/58 (2006.01); H04M 1/00 (2006.01); H04M 9/00 (2006.01); H04M 9/08 (2006.01); H04M 1/60 (2006.01); H04R 17/02 (2006.01)
IPC 8 main group level
H04M (2006.01)
CPC (source: EP KR US)
G10L 25/60 (2013.01 - KR); H04B 3/20 (2013.01 - EP US); H04M 9/001 (2013.01 - KR); H04M 9/08 (2013.01 - KR); H04M 9/082 (2013.01 - EP US); H04R 3/00 (2013.01 - KR); H04R 17/00 (2013.01 - KR); H04R 29/001 (2013.01 - KR); H04M 1/6058 (2013.01 - EP US)
Citation (search report)
- [XY] US 6415034 B1 20020702 - HIETANEN JARMO [FI]
- [A] EP 0719018 B1 20021113 - MATSUSHITA ELECTRIC IND CO LTD [JP], et al
- [DA] JP 2001060895 A 20010306 - MICRO EMUZU KK & DATABASE COMPENDEX [online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; ANDERSON E H ET AL: "Simultaneous piezoelectric sensing/actuation: analysis and application to controlled structures", XP002457510, Database accession no. EIX94122069682 & EP 1213847 A1 20020612 - MICRO M S INC [JP]
- [Y] ANDERSON, HAGOOD: "Simultaneous Piezoelectric Sensing/Actuation: Ana- lysis and Application to Controlled Structures", J SOUND VIB; JOURNAL OF SOUND AND VIBRATION JUL 28 1994 PUBL BY ACADEMIC PRESS LTD, LONDON, ENGL, vol. 174, no. 5, 28 July 1994 (1994-07-28), pages 617 - 639, XP002457729
- See references of WO 2005048572A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005048572 A2 20050526; WO 2005048572 A3 20051027; CN 1879393 A 20061213; EP 1683328 A2 20060726; EP 1683328 A4 20080123; IL 175360 A0 20060905; JP 2007511962 A 20070510; JP 2009089397 A 20090423; JP 4446125 B2 20100407; JP 4888852 B2 20120229; KR 100851286 B1 20080808; KR 20060105770 A 20061011; RU 2006120471 A 20071227; RU 2370890 C2 20091020; US 2007133442 A1 20070614; US 7881483 B2 20110201
DOCDB simple family (application)
US 2004037409 W 20041110; CN 200480033202 A 20041110; EP 04810623 A 20041110; IL 17536006 A 20060501; JP 2006539764 A 20041110; JP 2008261501 A 20081008; KR 20067011295 A 20060609; RU 2006120471 A 20041110; US 59575704 A 20041110